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  • RCS-9794A/B Protocol Converter

  • The RCS-9794A/B protocol converter is an integral part of PCS- 9700 substation automation system. It is used to establish reliable and flexible communication links between IEDs and the workstation.

    As a powerful and multifunctional communication and data storage piece of equipment, the RCS-9794A/B builds a bridge between workstation and IEDs using a variety of communication protocols from diverse venders. With its modular configuration, it is flexible, allowing for the addition of new protocols. The device is fully compliant with IEC61850 communication protocol. RCS- 9794A can be used independently. In contrast, RCS-9794B adopts duplicated scheme with two RCS-9794A units to realize HOT-STANDBY or Dual- HOT running mode.



    Basic Communication Protocol

    • Upward: IEC 61850, IEC 60870-5-103
    • Downward: IEC 60870-5-101, IEC 60870-5-103, IEC 61850- 5-104, MODBUS, CDT, DNP 3.0 (serial port).
    • NR Electric can customize new protocols for specific applications.
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  • Universal protocol converter
    The RCS-9794A/B is a highly-reliable, fully non-blocking intelligent protocol converter, which supports inter-working between a wide range of protocols.
  • Linking protection equipment and other IEDs to substation automation system.
    The RCS-9794 can send data from protective relays and other IEDs to SAS. It also can send the control commands of SAS to local bay units.
  • Linking protection equipment and other IEDs to remote terminal units.
    The RCS-9794 can send data from protective relays and other IEDs to RTUs. It can also send the remote commands of remote control center to local bay units.
  • Inspection and monitor of communication status.
    The RCS-9794 can inspect and monitor the communication status of various equipment. If a connection or a disconnection happens, the RCS-9794 will send the change-of-state message to a station level device, such as a local HMI or RTU.
  • Clock synchronization and system time unification.
    The RCS-9794 can receive Pulses Per Second (PPS) and the timing messages from a GPS device. It will also synchronize its clock with the GPS device and send the timing messages to the equipment that are connect to it.
  • Information synthesis and transmission
    According to the engineering requirements, the RCS-9794 can synthesize several signals to one signal, and send this synthetic signal to the control center appointed by users.
  • Self-diagnosis
    The RCS-9794 keeps checking for any hardware or software fault continuously when it is in operation mode.
  • Various communication protocols can be selected flexibly for each communication port,
  • Suitable for installation in cubicles.
  • Supporting a dual machine system configuration with the merit of absolutely electrical independence.
  • Dual Ethernet communication is used for the upward communication with local HMI or RTUs at station level to ensure the reliability of all upward communication.
  • Embedded multiple processor architecture, all processors are mutually independent and parallel running. Moreover, the equipment can equalize load among each processor. In this way, it exploits the merit of distributed multiprocessor system’s parallel processing ability.
  • Configurable communication interfaces.
  • Hardware time synchronization (pulse per second (PPS))
  • Various communication interfaces can be selected flexibly according to the engineering requirements. Serial ports, copper Ethernet ports, fiber serial ports and fiber Ethernet ports can be selected.
  • Data marshalling and distribution
  • Continuous self-monitoring
  • Continuous supervision on connected device
  • Powerful and friendly configuration tool and debugging tool
  • Common functions (e.g. general alarm, general fault signal, communication monitoring, etc.)